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I had much difficulty in validating the form inputs, I would like to have some insights and suggestions in validating the form inputs. Also, I had difficulty resetting the card number field in the form after the user submits it. I would love it if someone helps me fix the bug.

I found it difficult to make the component responsive, would love some tips for this senario.

I need help regarding how to spend less time in focusing more on CSS stuff and spend more time with structure and other things

I would like to receive help on how to present the code I write and to write a better readme and explain myself better.